[INFO] cloning repository https://github.com/summer-54/waff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/summer-54/waff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsummer-54%2Fwaff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsummer-54%2Fwaff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d8216104c080c81bd5b60107b40fd7f4715d4bb
[INFO] checking summer-54/waff against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsummer-54%2Fwaff" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/summer-54/waff
[INFO] finished tweaking git repo https://github.com/summer-54/waff
[INFO] tweaked toml for git repo https://github.com/summer-54/waff written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/summer-54/waff on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/summer-54/waff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "3f7770f5e124cab1d9dc83652eddf205529afd50fcbb721ce1c4ee0a028e853f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f7770f5e124cab1d9dc83652eddf205529afd50fcbb721ce1c4ee0a028e853f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f7770f5e124cab1d9dc83652eddf205529afd50fcbb721ce1c4ee0a028e853f", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "dadebf6d188f9bd2c37a80fbe24ed6b42fc72c94be9d235a0d50770c7276b8d1", kill_on_drop: false }`
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[INFO] [stdout] error: struct `Submission` is never constructed
[INFO] [stdout]  --> lib/src/instance/submission.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Submission {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code`, `id`, `test_verdicts`, and `verdict` are never read
[INFO] [stdout]  --> lib/src/instance/submission.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Submission {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 5 |     code: Box<str>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     id: u32,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     test_verdicts: HashMap<u32, TestVerdict>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 8 |     verdict: Verdict,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Submission` is never constructed
[INFO] [stdout]  --> lib/src/instance/submission.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Submission {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code`, `id`, `test_verdicts`, and `verdict` are never read
[INFO] [stdout]  --> lib/src/instance/submission.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Submission {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 5 |     code: Box<str>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     id: u32,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     test_verdicts: HashMap<u32, TestVerdict>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 8 |     verdict: Verdict,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lib` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lib` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "dadebf6d188f9bd2c37a80fbe24ed6b42fc72c94be9d235a0d50770c7276b8d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dadebf6d188f9bd2c37a80fbe24ed6b42fc72c94be9d235a0d50770c7276b8d1", kill_on_drop: false }`
[INFO] [stdout] dadebf6d188f9bd2c37a80fbe24ed6b42fc72c94be9d235a0d50770c7276b8d1